Jani Nikula <jani.nikula@xxxxxxxxx> writes: > On Mon, 02 Mar 2015, Imre Deak <imre.deak@xxxxxxxxx> wrote: >> Bjørn reported that his machine hang during hibernation and eventually >> bisected the problem to the following commit: >> >> commit da2bc1b9db3351addd293e5b82757efe1f77ed1d >> Author: Imre Deak <imre.deak@xxxxxxxxx> >> Date: Thu Oct 23 19:23:26 2014 +0300 >> >> drm/i915: add poweroff_late handler >> >> The problem seems to be that after the kernel puts the device into D3 >> the BIOS still tries to access it, or otherwise assumes that it's in D0. >> This is clearly bogus, since ACPI mandates that devices are put into D3 >> by the OSPM if they are not wake-up sources. In the future we want to >> unify more of the driver's runtime and system suspend paths, for example >> by skipping all the system suspend/hibernation hooks if the device is >> runtime suspended already. Accordingly for all other platforms the goal >> is still to properly power down the device during hibernation. >> >> v2: >> - Another GEN4 Lenovo laptop had the same issue, while platforms from >> other vendors (including mobile and desktop, GEN4 and non-GEN4) seem >> to work fine. Based on this apply the workaround on all GEN4 Lenovo >> platforms. >> - add code comment about failing platforms (Ville) >> >> Reference: http://lists.freedesktop.org/archives/intel-gfx/2015-February/060633.html >> Reported-and-bisected-by: Bjørn Mork <bjorn@xxxxxxx> >> Signed-off-by: Imre Deak <imre.deak@xxxxxxxxx> > > Bjørn, I would really appreciate your Tested-by on this patch before I > queue it for v4.0 and cc: stable for v3.19. No problem. This version still works fine for me. Feel free to add Tested-by: Bjørn Mork <bjorn@xxxxxxx> Bjørn _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
